Textured Z-type hexaferrites Ba₃Co₂Fe₂₄O₄₁ ceramics with high permeability by reactive templated grain growth method

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• 作者：Panpan Chang^a ; Li He^b ; Dandan Wei^a ; Hong Wang^a ; ^{hwang@mail.xjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Z-type hexaferrite ; Textured ceramics ; Magnetic anisotropic ; Reactive templated grain growth
• 刊名：Journal of the European Ceramic Society
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：36
• 期：10
• 页码：2519-2524
• 全文大小：2496 K

文摘

The c-axis oriented Ba₃Co₂Fe₂₄O₄₁ (Co₂Z) ceramic with high permeability was successfully prepared by reactive templated grain growth (RTGG) method using reactive template BaFe₁₂O₁₉ (BaM) and complementary Ba₂Co₂Fe₁₂O₂₂ (Co₂Y). The microstructure and magnetic property of the textured ceramic sample in different orientations were investigated. The sample presents both structural and magnetic anisotropic characteristics. The obtained (0 0 h) textured Co₂Z ceramic exhibits a favorable combination of easy magnetization plane orientation, high initial permeability of 19.0 ± 1.2 (much higher than that from conventional ceramic method (CCM) (μ_i = 12)), and high cut-off frequency (f_r > 1 GHz), indicating the potential for high frequency application in novel electronic devices.